A ball hits the floor and rebounds after inelastic collision. In this case

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The momentum of the ball just after the collision is the same as that just before the collision

The mechanical energy of the ball remains the same in the collision

The total momentum of the ball and the earth is conserved

The total energy of the ball and the earth is conserved

answer is C.

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Detailed Solution

By the conservation of momentum in the absence of external force total momentum of the system (ball + earth) remains constant.

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